CN202881836U - Hydraulic lifting system of side plates of road surface milling planer - Google Patents
Hydraulic lifting system of side plates of road surface milling planer Download PDFInfo
- Publication number
- CN202881836U CN202881836U CN 201220505557 CN201220505557U CN202881836U CN 202881836 U CN202881836 U CN 202881836U CN 201220505557 CN201220505557 CN 201220505557 CN 201220505557 U CN201220505557 U CN 201220505557U CN 202881836 U CN202881836 U CN 202881836U
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- oil
- valves
- solenoid operated
- operated directional
- way solenoid
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Abstract
The utility model aims to provide a hydraulic lifting system of side plates of a road surface milling planer. The hydraulic lifting system comprises a first two-position four-way electromagnetic reversing valve, an overflow valve, two fixed value pressure reducing valves, two three-position four-way electromagnetic reversing valves, two two-position two-way reversing ball valves, four pipe joints with throttle holes, a left side plate lifting cylinder and a right side plate lifting cylinder, wherein a high-pressure oil outlet of the system is divided into five paths among which the two paths are respectively connected with the oil inlet and the oil outlet of the two-position four-way electromagnetic reversing valve, the one path is connected with the oil inlet of the overflow valve and the other two paths are respectively connected with the oil inlets of the two fixed value pressure reducing valves; the oil outlets of the two fixed value pressure reducing valves are respectively connected with the oil inlets of the two three-position four-way electromagnetic reversing valves; and the oil outlets of the two three-position four-way electromagnetic reversing valves are respectively connected with the rodless-type cavities and the rod-type cavities of the left side plate lifting cylinder and the right side plate lifting cylinder. According to the technical scheme provided in the utility model, the hydraulic lifting system has the beneficial effects that the functions of the lifting and the locking of the side plates are realized, and the lifting speed of the side plates is controlled effectively.
Description
Technical field
The utility model relates to a kind of pavement milling machine side plate hydraulic system for lifting, belongs to technical field of engineering machinery.
Background technology
Pavement milling machine is a kind of asphalt pavement conserving construction machinery, the excavation that is mainly used in the asphalt concrete pavements such as highway, airport, harbour, parking lot is overhauled, the removing of the pavement diseases such as asphalt pavement rut, be full of cracks, carbuncle bag, pavement markers, the plucking of cement pavement and surface layer faulting of slab ends mill the equality operation.The milling machine side plate is connected with side plate hoist cylinder piston rod by flexible axle.In the milling machine operation process, side plate is adjacent to the road groove and prevents that the milling material from extruding from side plate bottom, guarantees that the milling material is indoor at the milling machine material, then utilizes belt conveyor to be transported on the truck and transports.When milling machine is in off working state and when walking, need side plate risen and locking reducing walking resistance, milling machine is packed lorry into when transporting from ground, also need side plate is risen and locking, side plate consists of it and hinders when preventing the milling machine climbing.
For avoiding the flexible axle overload that withstands shocks, the speed of side plate lifting is unsuitable too fast.Therefore need to provide the lifting of a kind of realization side plate and latch functions, and effectively control the speed of side plate lifting, prevent the too fast pavement milling machine side plate hydraulic system for lifting of side plate action.
The utility model content
For the problem that prior art exists, the purpose of this utility model is, a kind of pavement milling machine side plate hydraulic system for lifting is provided, and this system realizes side plate lifting and latch functions with cheap cost, and has effectively controlled the speed of side plate lifting.
In order to realize above-mentioned task, the utility model is realized by following technical solution:
A kind of pavement milling machine side plate hydraulic system for lifting comprises a two-position four-way solenoid operated directional valve, an overflow valve, two fixed pressure reducing valves, two 3-position 4-way solenoid operated directional valves, two bi-bit bi-pass electromagnetic ball valves, left plate hoist cylinder and right plate hoist cylinders; The high pressure oil-out of system divides five the tunnel, and two-way meets respectively oil inlet P and the oil-out A of described two-position four-way solenoid operated directional valve, and one the tunnel connects the oil inlet P of described overflow valve, and two-way connects respectively the oil inlet P of described two fixed pressure reducing valves; The oil-out P ' of described two fixed pressure reducing valves connects respectively the oil inlet P of described two 3-position 4-way solenoid operated directional valves, and the oil-out A of described two 3-position 4-way solenoid operated directional valves connects respectively the rodless cavity of described left plate hoist cylinder and the rodless cavity of right plate hoist cylinder; The oil-in A of described two bi-bit bi-pass electromagnetic ball valves meets respectively the oil-out B of two 3-position 4-way solenoid operated directional valves, and the oil-out B of described two bi-bit bi-pass electromagnetic ball valves connects respectively the rod chamber of left plate hoist cylinder and the rod chamber of right plate hoist cylinder; All joining by union and system pipeline with throttle orifice into and out of hydraulic fluid port of left plate hoist cylinder and right plate hoist cylinder; The equal connected tank of oil return inlet T of the oil-out T of the oil return inlet T of two-position four-way solenoid operated directional valve, oil-out B, overflow valve, the drain tap T of two fixed pressure reducing valves and two 3-position 4-way solenoid operated directional valves.
Further, the Median Function of described two 3-position 4-way solenoid operated directional valves is the Y type.
Further, described union is the union with throttle orifice.
The beneficial effects of the utility model are: owing to adopt technique scheme, can realize the lifting of milling machine side plate and latch functions, effectively control the speed of side plate lifting, and simple in structure, with low cost, dependable performance.
Description of drawings
Fig. 1 is hydraulic schematic diagram of the present utility model.
Wherein:
1, two-position four-way solenoid operated directional valve 2, overflow valve 3, left fixed pressure reducing valve
4, left 3-position 4-way solenoid operated directional valve 5, the second from left position two-way electromagnetic ball valve 6, with the union of throttle orifice
7, left plate hoist cylinder 8, right plate hoist cylinder 9, right bi-bit bi-pass electromagnetic ball valve
10, right 3-position 4-way solenoid operated directional valve 11, right fixed pressure reducing valve 12, fuel tank
13, system high pressure oil-out
The specific embodiment
Below in conjunction with accompanying drawing a kind of preferred specific embodiment of the present utility model is made brief description.
As shown in Figure 1:
A kind of pavement milling machine side plate hydraulic system for lifting, a two-position four-way solenoid operated directional valve 1, an overflow valve 2, left fixed pressure reducing valve 3, right fixed pressure reducing valve 11, left 3-position 4-way solenoid operated directional valve 4, right 3-position 4-way solenoid operated directional valve 10, the second from left position two-way electromagnetic ball valve 5, right bi-bit bi-pass electromagnetic ball valve 9, left plate hoist cylinder 7 and right plate hoist cylinder 8, system high pressure oil-out 13 minutes five tunnel, two-way meets respectively oil inlet P and the oil-out A of described two-position four-way solenoid operated directional valve 1, one the tunnel connects the oil inlet P of described overflow valve 2, one the tunnel connects the oil inlet P of described left fixed pressure reducing valve 3, and one the tunnel connects the oil inlet P of described right fixed pressure reducing valve 11; The oil-out P ' of described left fixed pressure reducing valve 3 connects the oil inlet P of left 3-position 4-way solenoid operated directional valve 4, the oil-out P ' of right fixed pressure reducing valve 11 connects the oil inlet P of described right 3-position 4-way solenoid operated directional valve 10, the oil-out A of left 3-position 4-way solenoid operated directional valve 4 connects the rodless cavity of described left plate hoist cylinder 7, and the oil-out A of described right 3-position 4-way solenoid operated directional valve 10 connects the rodless cavity of described right plate hoist cylinder 8; The oil-in A of described the second from left position two-way electromagnetic ball valve 5 meets the oil-out B of left 3-position 4-way solenoid operated directional valve 4, and the oil-out B of the second from left position two-way electromagnetic ball valve 5 connects the rod chamber of left plate hoist cylinder 7; The oil-in A of described right bi-bit bi-pass electromagnetic ball valve 9 meets the oil-out B of right 3-position 4-way solenoid operated directional valve 10, and the oil-out B of right bi-bit bi-pass electromagnetic ball valve 9 connects the rod chamber of right plate hoist cylinder 8; All joining with system pipeline by the union 6 with throttle orifice into and out of hydraulic fluid port of described left plate hoist cylinder 7, right plate hoist cylinder 8; The equal connected tank 12 of oil return inlet T of the oil return inlet T of two-position four-way solenoid operated directional valve 1 and oil-out B, overflow valve 2 oil-out T, the drain tap T of left fixed pressure reducing valve 3, the drain tap T of right fixed pressure reducing valve 11, the oil return inlet T of left 3-position 4-way solenoid operated directional valve 4, right 3-position 4-way solenoid operated directional valve 10; The Median Function of described left 3-position 4-way solenoid operated directional valve 4 and right 3-position 4-way solenoid operated directional valve 10 is the Y type.
The course of work is as follows:
Described two-position four-way solenoid operated directional valve 1 comprises electromagnet Y1, left 3-position 4-way solenoid operated directional valve 4 comprises electromagnet Y2 and Y3, the second from left position two-way electromagnetic ball valve 5 comprises electromagnet Y4, right bi-bit bi-pass electromagnetic ball valve 9 comprises electromagnet Y5, and right 3-position 4-way solenoid operated directional valve 10 comprises electromagnet Y6 and Y7;
The specific embodiment of left plate lifter motion: electromagnet Y1 gets electric, system made pressure, and electromagnet Y2 gets electric, and Y3, Y4, Y5, Y6, Y7 all cut off the power supply, and the piston rod of left plate hoist cylinder 7 moves upward and drives the left plate lifting;
The specific embodiment of right plate lifter motion: electromagnet Y1 gets electric, system made pressure, and electromagnet Y6 gets electric, and Y2, Y3, Y4, Y5, Y7 all cut off the power supply, and the piston rod of right plate hoist cylinder 8 moves upward and drives the right plate lifting;
The specific embodiment that left plate descends: electromagnet Y1 gets electric, system made pressure, and electromagnet Y3, Y4 get electric, and Y2, Y5, Y6, Y7 all cut off the power supply, and the piston rod of left plate hoist cylinder 7 moves downward so that left plate descends;
The specific embodiment that right plate descends: electromagnet Y1 gets electric, system made pressure, and electromagnet Y5, Y7 get electric, and Y2, Y3, Y4, Y6 all cut off the power supply, and the piston rod of right plate hoist cylinder 8 moves downward so that right plate descends;
The specific embodiment of side plate locking: electromagnet Y1 outage, the fluid of system high pressure oil-out 13 is by two-position four-way solenoid operated directional valve 1 direct oil sump tank 12, system unloaded is to reduce energy consumption, electromagnet Y2, Y3, Y4, Y5, Y6, Y7 all cut off the power supply, and the rod chamber fluid of left plate oil cylinder 7 and right plate oil cylinder 8 is respectively by the second from left position two-way electromagnetic ball valve 5 and right bi-bit bi-pass electromagnetic ball valve 9 lockings.
The specific embodiment of control side plate rising or falling speed: at the union 6 into and out of hydraulic fluid port tape splicing throttle orifice of side plate oil cylinder, reduce the flow that enters side plate hoist cylinder fluid, and then control side plate rising or falling speed, prevent that the side plate action is too fast.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (3)
1. pavement milling machine side plate hydraulic system for lifting, comprise left plate hoist cylinder and right plate hoist cylinder, it is characterized in that: also comprise a two-position four-way solenoid operated directional valve, an overflow valve, two fixed pressure reducing valves, two 3-position 4-way solenoid operated directional valves and two bi-bit bi-pass electromagnetic ball valves; The high pressure oil-out of system divides five the tunnel, and two-way meets respectively oil inlet P and the oil-out A of described two-position four-way solenoid operated directional valve, and one the tunnel connects the oil inlet P of described overflow valve, and two-way connects respectively the oil inlet P of described two fixed pressure reducing valves; The oil-out P ' of described two fixed pressure reducing valves connects respectively the oil inlet P of described two 3-position 4-way solenoid operated directional valves, and the oil-out A of described two 3-position 4-way solenoid operated directional valves connects respectively the rodless cavity of described left plate hoist cylinder and the rodless cavity of right plate hoist cylinder; The oil-in A of described two bi-bit bi-pass electromagnetic ball valves meets respectively the oil-out B of two 3-position 4-way solenoid operated directional valves, and the oil-out B of described two bi-bit bi-pass electromagnetic ball valves connects respectively the rod chamber of left plate hoist cylinder and right plate hoist cylinder; All joining by union and system pipeline with throttle orifice into and out of hydraulic fluid port of left plate hoist cylinder and right plate hoist cylinder; The equal connected tank of oil return inlet T of the oil-out T of the oil return inlet T of two-position four-way solenoid operated directional valve, oil-out B, overflow valve, the drain tap T of two fixed pressure reducing valves and two 3-position 4-way solenoid operated directional valves.
2. pavement milling machine side plate hydraulic system for lifting according to claim 1, it is characterized in that: the Median Function of described two 3-position 4-way solenoid operated directional valves is the Y type.
3. pavement milling machine side plate hydraulic system for lifting according to claim 1, it is characterized in that: described union is the union with throttle orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505557 CN202881836U (en) | 2012-09-28 | 2012-09-28 | Hydraulic lifting system of side plates of road surface milling planer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505557 CN202881836U (en) | 2012-09-28 | 2012-09-28 | Hydraulic lifting system of side plates of road surface milling planer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202881836U true CN202881836U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505557 Expired - Fee Related CN202881836U (en) | 2012-09-28 | 2012-09-28 | Hydraulic lifting system of side plates of road surface milling planer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202881836U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443472A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Milling machine workbench hydraulic transmission device |
| CN106762884A (en) * | 2017-03-13 | 2017-05-31 | 浙江大学 | Based on the vertical tuning hydraulic systems of pressure compensated TBM |
| CN109083877A (en) * | 2018-10-17 | 2018-12-25 | 北京天顺长城液压科技有限公司 | Hydraulic control circuit for milling machine tail-gate |
| CN112663470A (en) * | 2019-10-15 | 2021-04-16 | 维特根有限公司 | Self-propelled construction machine |
-
2012
- 2012-09-28 CN CN 201220505557 patent/CN202881836U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443472A (en) * | 2015-12-11 | 2016-03-30 | 苏州源硕精密模具有限公司 | Milling machine workbench hydraulic transmission device |
| CN106762884A (en) * | 2017-03-13 | 2017-05-31 | 浙江大学 | Based on the vertical tuning hydraulic systems of pressure compensated TBM |
| CN109083877A (en) * | 2018-10-17 | 2018-12-25 | 北京天顺长城液压科技有限公司 | Hydraulic control circuit for milling machine tail-gate |
| CN112663470A (en) * | 2019-10-15 | 2021-04-16 | 维特根有限公司 | Self-propelled construction machine |
| CN112663470B (en) * | 2019-10-15 | 2022-07-26 | 维特根有限公司 | Self-propelled construction machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |